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fomenos
3 years ago
9

Which of the following best describes rust?

Biology
1 answer:
olga nikolaevna [1]3 years ago
3 0

Answer:

irreversible chemical change

Explanation:

A chemical change always results in a new substance and as it is not possible to reverse it, it is an irreversible chemical change.

I hope you understood :)

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lina2011 [118]

Answer:

true

The smaller the load a river has the more sediment it can carry. TRUE.

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3 years ago
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Although scientists do not know the exact origin of eukaryotic cells, the ______ theory does explain the origin of the mitochond
pentagon [3]
<h3>Answer:<u><em> The Endosymbiotic theory</em></u></h3>

Explanation:

The Endosymbiotic Theory states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote). This theory explains the origin of eukaryotic cells.

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Where is the medulla oblongata located.​
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Explanation:

The medulla oblongata is located in the hind brain.

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Groundwater _____. A)exists above the earth's surface B)is impossible to pollute C)forms when precipitation seeps into the soil
kirill [66]

Answer: C

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8 0
3 years ago
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Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to
BartSMP [9]

Answer: Homologous chromosomes are randomly distributed to daughter cells, this means different chromosomes segregate independently of each other. And they exchange segments of DNA during crossing over. This recombination creates genetic diversity because genes from each parent are exchanged.

Explanation:

Meiosis is a type of cell division that produces gamete cells, which are sex cells (egg and sperm)

Chromosomes that form a pair and are found together are called homologous chromosomes, and they are inherited from each parent. During prophase of meiosis I, the homologous chromosomes exchange segments of DNA in a process called crossing over. This recombination creates genetic diversity because genes from each parent are exchanged. <u>It results in new combinations of genes on each chromosome.</u>

After that, during the anaphase of meiosis I, the two chromosomes line up on the equatorial plane of the cell. Then, they are separated and each will go to a new daughter cell. So homologous chromosomes are randomly distributed to daughter cells, <u>this means different chromosomes segregate independently of each other.</u>

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3 years ago
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